Combined gas and wood and coal range



G. R. CHILD.

COMBWED GAS ANI woon AND COAL RANGE.

Patented Nov. 8, 192.1.

G. B. CHILD.

COMBINED GAS AND wooo AND COAL RANGE.

APPLICATION FILED NOV. II` 1919.

Patented Nm'. 8, 1921,

3 SHEET5- SHEET G. B. CHILD.

COMBINED GAS AND WOOD AND COAL RANGE.

APPLICATION FILED. Nov. II. I9I9.

1,396,623. Patented Nov. 8, 1921.

3 SHEETS-SHEET 3..

UNITED STATES PATENT OFFICE.

GUY B. CHILD, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN STOVE COMPANY,OF

ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEY.

COMBINED GAS AND WOOD AND COAL RANGE.

Specication oi' Letters Patent.

Patented Nov. 8, 1921.

-therein to the accompanying drawing.

This invention relates to improvements in combined gas and wood and coalranges, and the primary object is to rovide a range construction whichwill enab c it t'o be used for top and oven cooking with either gas,

or solid fuel in the form of wood or coal, or'

the use of both at the same time.

I am aware that it is not broadly novel to provide a. range adapted touse gas, or solid fuel, but my invention is -for a particular and novelway of constructing the range to adapt it to the above-mentioned formsof fuel.

A further object of my present invention is to provide a mechanism whichwill prevent the gas burner being lighted until the oven door is opened,whereby accumulation of gas in a closed oven before lighting the burneris prevented, thereby avoiding a destructive explosion within a closedoven by lighting the burner when the oven is lled, or partially filled,with ignitible gas.

Another object of my present invention is to locate the gas burner in achamber formed by a depressed part of the oven below its bottom, and toprovide air-siipply passages below the burner.l and an exit flue at theto of the oven, the passage and flue bein simu t-aneously controlled cbyconnected campers for the passage and flue.

A further object of my present invention is to ro-vide a mechanismoperatively connecte with the gas valve controlling member and dampersfor controlling the inlet and exit of air to the oven, whereby when thegas valve is closed, the dampers are closed, and when the gas valve isopen, the dampers are simultaneously opened, for the purpose ofaffording an air circulation to the gas burner and through the oven whenthe gas valve is opened and the burner lighted, and to close the saidair-circulation through the oven when the gas burner is extin uished bythe closing of the gas valve.

urther objects of my invention will appear from the followingdescription of the drawings, 1n which- Figure l is a front elevation ofa combined gas and solid fuel range embodying my iinprovements.

Fig. 2 is a vertical central sectional view taken transversely throughmy improved range.

Fig. 3 is a side elevation showing the mechanism for controlling theinlet and outlet dampers of the oven through the movement of the gasvalve.

Fig. is a transverse vertical central sectional view of Fig. 3.

Fig. 5 is a detached top plan of the depressed bottom of the oven,showing the burner and air passages in dotted lines.

Fig. 6 is a vertical sectional view of Fig. 5, on the' line 6 6.

Fig. 7 is an enlarged elevation of the automatic door-operated latchcoperating with the operating handle of the gas valve.

Fig. 8 is a top plan View of Fig. 7.

Fig. 9 is a sectional view of Fig. 7, on the line 9 9 looking in thedirection indica-ted by arrow.

My improved range has a suitable housing A, in which is located afire-pot B, for receiving solid fuel of any kind. A baking oven C islocated within the housing A, and in the usual relative position to thefire-pot B. This housin y A has the usual flue l, extending aroun theoven C, and the usual chimney Hue 2, at the back of the housing A. Theflue 1 is provided with the usual dam er 5, at its upper end b means ofwhich w en 1t is open the draft rom the lire-pot B will flow directlyinto the chimney flue 2, for the purpose of increasing the draft, andwhen the damper 3 is closed, the draft is caused to circulate around theoven and to enter the chimney flue 2, at its lower end in the usualandwell-known manner.

The oven C is provided with a lining 4,

in from the right hand side of the range, as clearly shown in Figs. 1and 2, the burner being located below the .oven bottom 6, as shown.

In my improved construction, fresh air is supplied to the gas burner byproviding a passage-way 8, extending toward the front of the range andperforms the function of the usual deflector partition provided in solidfuel ranges, for directing the hot gases that pass down the side of theoven toward the front of the stove, and preventing them passing directlyto the chimney flue outlet. This passage 8 has its outer'end 9 open andcontrolled by a suitable damper 10. The passage 8 extends forwardapproximately at the center of the range and is provided with a thimbledopening 11 communicating with the burner chamber D. In addition thechamber 8 is provided with laterally extending tubular arms 12, whichhave their ends provided wthup-turned thimbles 13, which pass throughthe bottom of the troughshaped member 4. Biy this construction fresh airis supplied under and to the burner at several points, thus distributingit in a way to furnish oxygen for the proper combustion of the asflowing from the burner.

The burner is of a form and its gas openings are so located, that thegreater portion of the heat from the ame passes i directl up the sidefines, while a Small pora valve 18, and

tion o it, is spread out underv the center of the bottom 6 of the oven.As here shown,

the burner 7 has cross-burner arms 7', at-

its opposite ends.

By reference to Fig. 2, it will be observed that the oven linin 4 isseparated from the wall of the oven thus constituting open flues 14,which communicate at their lower ends with the burner chamber D, and attheir upper ends with the oven. An outlet oven flue 15 is located at thefront and top of the oven C, and this outlet flue is controlled by asuitable damper 16. The lower wall 17 of the flue 15 is perforated forthe purpose of controlling the circulation of heated air and theproducts of combustion as they pass through the oven to the outlet 15controlled by the damper 16. l

Gas is ysupplied to the burner 7, through a suitable gas supply pipe 17controlled by a gas supply pipe 19 extends to the front of one of theright hand ends of the top of the range and is provided with a pluralityof valves 20, for controlling the flow of gas to the open top gasburners (not shown), located at the top and the 4right hand side of therange, for the purpose of gas top cooking. This leaves the center andother side of the top of the range for top cooking from the solid fuelin the firepot B.

From. this description it will be understood that with my improvedconstruction of a combined gas and solid fuel range, tle

or gas cooking, or for the combined solid fuel and gas cooking. It willalso be understood 'that with my improved range solid fuel may be usedfor baking, while at the same time top cooking may be done with thevopen gas burners. It will also be observed that there are no parts ofthe ran/ge to be moved in converting it from a solid fuel to a gas fuelcooking range, 'or vice versa. When the range is being used for gascooking alone, the dampers 10 and 16 are open, as shown in Fig. 4, toprovide a circulation of air therethrough, and when the range is beingused for solid fuel cookin these dampers will preferably be close Thedampers 10 and 16 are operatively c onnected with the gas valve 18, sothat when the gas valve is opened, the dampers are open, and when thegas valve is closed, the dampers are closed, by a construction and for apurpose which Willbe presently ex plained.

Where solid fuel is used, it takes considera-ble time to start the fireand get it and the oven hot enough to cook. By the construction heredisclosed, the solid fuel can be started and at the same time the gasburner started for the purpose of heating up the range for cooking, andwhile the solid fuel in the fire-pot is burning up. This enables therange to be 4quickly heated for cooking, as, for instance, in themorning. When the solid fuel has obtained sufficient heatfor cooking,then the gas may be cut off and the solid fuel used for theremainder ofthe day. Again, if the solid fuel fire has gotten low, and it is desiredto quickly heat up the stove, this can be done by the gas burner and thegas heating will not interfere with the solid fuel heating, and viceversa.

Furthermore, the oven and the food to be cooked may be heated to thedesired temperature and the gas burner turned oil', which will close thedampers 10 and 16, thus closing the oven with its retained heat tocontinue the cooking without the use of further gas.

The dampers 10 and 16 are simultaneously opened and-closed when the asvalve 18 is opened and closed by the ollowing con struction:

A handle 21 has its'inner end 22 inter locking with the gas valve 18,and its handle carries an extension 23 having at its opposite end acrank arm 24. This arm 24 is connected with the damper 10 by means of alink 25 and crank arm 26, and is connected with the damper 16 by a link27 and crank arm 28. With the parts in the position shown in Fig.' 3,the gas valve 18 is open and the burner lighted. With the gas valveopen, the dampers 10 and 16 arev open to provide the necessary aircirculation to the gas burner 7 and through the oven, as beforedescribed. When the gas valve 18 is closed and the gas burner 7extinguished, the dampers 10 and 16 are simultaneously closed, thuspreventing further circulation through the oven and retainin the heatwithin the oven for continuing te cooking if desired, without the use offurther gas, as before described.

As a means for preventing the gas valve 18 from being opened and the gasburner lighted when the oven' door 29 is closed, I provide a latch E,which is controlled by the opening and closing of the oven-door 29, inthe manner which I will now explain. This latch E comprises two members30 and 31, pivoted on a suitable bolt 32. The member 30 extends towardthe hinged edge of the oven-door 29, and its free end is adapted to beengaged and operated by a wedge-shaped lug 32', projecting from thehinged edge of the oven door 29. When the oven door is closed, themember 30 is in the elevated position shown in Figs. 7, 8 and 9. Whenthe oven door is opened, the member 30 will fallv by gravity to theposition shown in dotted lines Fig. 7 and is supported in its lowestposition by a suitable stop 33. The pivoted member 31 extends toward thegas valve operating handle 21 and has its projecting free end 34 ,whenin its lowered position in the path of travel of a lug 35 carried by theas valve operating handle 21. In this position the projecting end 34 ofthe member 31 and the lug 35, will prevent the gas valve handle 21 frombeing turned to open position. As clearly shown in Fig. 8, the pivotedends of the members 30 and 31 overlap each other. As shown in Fig. 7,the pivoted end of the member 30 has a shoulder 36 and the pivoted endof the member 31, has a projecting lug 37 adapted to be engaged by theshoulder 36. By reason of this construction, when the oven door 29 isopen and the member 30 falls to dotted position Fig. 7, the shoulder 36engages the lug 37 and moves the member 31 up to the position shown indotted lines, Fig. 7. With the oven door open and the parts of the latchE in the position shown in dotted llines Fig. 7, the gas valve handlehere shown in oif position can be turned to open position, the burnerthen is lighted and the oven door closed. The closing of the oven doorwill lift the parts of the latch E to the position shown in solid linesFig. 7 but the latch member 31 has an upward movement independent of thelatch member 30, so that the gas valve handle 21 can be turned 'toclosed position with the oven door closed, but it cannot be turned toopen position when the oven door is closed without lifting manually theend 31 of the latch.

The object of this construction is, first, t0 require that the oven doormust be open before the gas valve can be opened, and, secondly, itpermits the gas valve to be closed, at the same time closing the dampers10 and 16, while the oven door is closed, thus retaining the heat fromthe burner within the oven, or the purpose before stated.

Having thus described my invention, what I claim and desire to secure byLetters Patent is 1. A cooking range of the character described,comprising an oven, a burner chamber below the oven and in communicationwith the oven, an air inlet passage in commun'ication with the burnerchamber extending laterally thereto, the inlet passage havinglongitudinally extending supplemental passage connections communicatingwit-h the ends of the burner chamber, an air outlet passagecommunicating with the oven, a chimney ue communlcating with the saidoven outlet passage, a gas burner in the burner chamber, a fuel valvefor the burner, dampers adapted to open and close the air inlet and theoven outlet fiue, and operative connections between the fuel valve andboth of saidI dampers whereby the dampers are opened and closed by theopening of the fuel valve, for the purpose described.

2. A combined coal and gas range comprising an oven having a perforatedbottom, an oven chamber below and completely embracing the entire ovenbottom, a gas burner in said chamber, an air inlet passage to the burnerchamber extending laterally thereto and provided with laterallyextending supplemental passage connections communicating with the endsof the burner chamber, an air outlet passage communicating with theoven, a fuel valve for the burner, ldampers adapted to open and closethe air inlet and the oven outlet flue, and operative connectionsbetween the fuel valve and both of said dampers whereby the dampers areopened and closed by the opening of the fuel valve, for the purposedescribed.

3 A cooking range of the character described, comprising a housing, anoven within the housing and separated therefrom to form a fiue passageand a fire-box chamber, a fire box in 'communication with the iiuepassage, a perforated bottom for the oven, a burner chamber below theoven bottom, a burner within the said burner chamber, an air inletpassage communicating with the burner chamber and extending laterallythereto and communicating with an opening in the rear wall of thehousing, an air outlet flue extending across the top of the oven and incommunication with a chimney flue at the rear of the oven, and dampersarranged to simultaneously open and close the air inlet passage and theoven outlet Hue.

4. A cooking range comprising a housing,

an oven therein, a chimney flue, a gas valve for the oven, an oven Hueoutlet commumeating with the chimney fide, a hlnoed oven door, a twopart pivoted latch, the parts of the latch being in extended parallelrelation with overlapping ends the oven door having a cam surfaceadapted to engage one part of the latch, the overlapplng ends of the twoarts of the latch interlocking whereby t ey are moved together by theengagement of the oven door wlth one of the ends of the latch parts, andthe gas valve of the oven having a projectlng portion locked by theopposite end of the other latch part when the oven door is closed,combined for the purpose descrlbed.

5. A cooking range of the character described, comprising an oven, aburner chamber below the oven bottom and in communication with the oven,an air inlet passage in communication with the burner chamber, extendinlaterally thereto, the inlet passage havmg longitudinally extendingsupplemental passage connectlons communicat- 'lng with the ends of theburner chamber, an air outlet passage communicating with the oven, and achimney flue communicating with the said oven outlet assage.

6. A cooking range of t e character described, comprxsing a housing, anoven within the housing and separated therefrom to form a flue passage,a irebox in communication with the iiue assage, a chimney ue incommunication wlth said flue passage, a burner below the bottom of theoven, the oven bottom perforated, an air inlet passage communicatingwith the burner chamber and extending laterally thereto, supplementalair inlet passages in communication' with the burner chamber and themain air inlet passage, a flue outlet passage extending across the topof the oven and having ,communication at its rear end with the chimneyiue, the parts combined for the purpose described.

In testimony whereof I hereunto aix my signature.

GUY B. CHILD.

